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Effects of compressing and remelting in SIMA processing on semi-solid structure evolution of an Al-Zn wrought alloyLIU Changming and ZOU Maohua1) College of Mechanical Engineering, Chongqing University, Chongqing 400044, China2) College of Polytechnic, Chongqing University, Chongqing 400044, China摘 要:<正> Structure evolution of an Al-Zn wrought......
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Trans. Nonferrous Met. Soc. China 31(2021) 2323-2335 Microstructure and mechanical properties of TA15/TC11 graded structural material by wire arc additive manufacturing process He WANG1, Shu-yuan MA1... of Technology, Beijing 100081, China Received 26 August 2020; accepted 2 March 2021 Abstract: A graded structural material (GSM) with a material transition from TA15 to TC11 was fabricated by wire......
钢板热镀55％Al-Zn层的耐盐水腐蚀性能 李华飞1,郑家燊1,俞敦义1 (1.华中科技大学化学系) 摘要:采用全浸,半浸和盐雾等试验方法研究了钢板热镀55％Al-Zn合金镀层在3％NaCl的盐水溶液中的腐蚀行为.观察分析了镀层的组织结构和在盐水中腐蚀后的表面形貌及腐蚀产物,阐述了镀层在盐水中的腐蚀过程和机理.结果表明55％Al-Zn合金镀层比Zn镀层更耐蚀,并同样具有Zn镀层对钢基体的保护能力. 关键词:55％Al-zn合金镀层盐水腐蚀机理; [全文内容正在添加中] ......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
:A Research progress on fixed diamond wire saw Wang Mei-juan, Wang Ri-chu, Peng Chao-qun, Feng Yan, Zhang Chun (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The preparation methods of fixed diamond,such as wire brazing, resin bonded adhesion and electroplating were summarized. The principle, model and methods of cladding on diamond were......
of Ti–47 at% Ni–3 at% Fe shape memory alloy wire under the condition of severe cold drawing at room temperature and different post-deformation annealing processes were intensively investigated using transmission electron microscope(TEM) and differential scanning calorimetry(DSC). It is indicated that the amorphous phase is dominant in the Ti50Ni47Fe3 wire after the cold drawing of 78 % areal reduction......
铀表面Al-Zn镀层的结构和保护性能 张延志1,汪小琳1,吕学超1,鲜晓斌1,郎定木1,肖红1 (1.中国工程物理研究院,四川,绵阳,621900) 摘要:利用扫描电镜(SEM),俄歇能谱分析(AES),X射线衍射分析(XRD)和电化学等技术,研究了磁控溅射沉积Al-Zn镀层的结构及其对铀的保护性能.结果表明施加偏压显著地影响Al-Zn镀层的结构和保护性能.在-100V偏压下沉积的Al-Zn镀层,其组织更致密,成分有择优重溅射现象并伴有合金相生成,更有利于铀的防腐保护. 关键词:铀; 磁控溅射; Al-Zn镀层; 结构; 保护; [全文内容正在添加中] ......
Al-Zn合金GP区的价电子结构分析 高英俊1,班冬梅1,常素玲1,韩永剑1 (1.广西大学物理科学与工程技术学院,广西,南宁,530004;2.中国科学院国际材料物理中心,辽宁,沈阳,110016) 摘要:运用固体经验电子理论(EET)计算了Al-Zn合金GP区的价电子结构.计算结果表明,由于GP区晶胞的最强键上的共价电子数远比纯Al晶胞的最强键共价电子数多,Al原子与Zn原子形成较强的共价键,因此,在Al-Zn合金中即使以较快的速度淬火,也容易在淬火过程中形成GP区.由于GP区的共价键络较强,使得合金硬度在GP区一开始形成时就稳步地提升,合金的硬度到中间相形成时达到最大值. 关键词:Al-Zn合金; GP区; 价电子结构; [全文内容正在添加中] ......
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